Photography



'lflsiiran' brains 'WQEATENT @rricie.

ARHAXD'MULLER JACOBS), 0F NEW YORK, N. 15., ASSIGNOR Ti) Till) KNIVERSAL COLOR GUMPANY, OF Nil? YORK.

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EBPEQIFICATION ionizing part of Letters Patent No. 358.315, dated March 1, l6iE7. Application filed Octolnr 2.3, 1: 96. Serial X0. 217,036. (No specimens.)

To-dZZ whom it may concern.-

Be it known that I, Armani) Montan- JACOBS, residing at New York, in the county .of New-York and State of New York, have those not readily soluble in water, such as the; resmates of certain metals and organic bases.

l. find that the resinates of metals and orgauic bases by exposure to light change their properties as to, solubility and as to resistance lo bleaching and oxidizing agents and acids,

different resihates diiiering in degree of such change.

Before exposure to light the resinaies not readily soluble in Water are soluble in beuzole and various other hydrocarbons, in ether, chlo reform, and bisulphide of carbon, and are almost indifferent to the action of bleaching agents, such as hypochlorite of sodium; but after exposnre to light l find that they become more or less insoluble inthe above named solvcuts, and are affected by these bleaching agents.

1 have particularly employed the resiuates of alumina, zinc, magnesia, silver, and of quinine.

The resiuates may be employed uncolored, or they may bc'colored, as bya color in solu tion, such as an aniline color, or by a pigment finely divided, such as ultramarine, or by both.

the resulting precipitat'eeresinate of magne sia. I produce this precipitate colored either by adding a solution of the desired color to the resin-soap solution or to the magnesiasalt solution before precipitation, or by pass ing an aqueous or alcoholic solution of the color through the dry precipitate. I then, after drying, dissolve the resiuate in benzole, ether, chloroform, hisiilphide of carbon, or other suitable solvent. I then coat the surface upon which i wish to producethe photograph with the solution, and then expose it to the action of light in the usual manner that is, either in a photographic camera or under the picture, drawing. or other matter which I wish ohlorite of sodium. oxidizing agents, alhalics,

or acids which will fifflcll those parts or the color on. those parts of he surface which have been exposed to the light without materially afifecting the parts or the color of the parts which have not been exposed to light.

Photographs can be so produced upon any surface which is not liable to injury by the action of the abovenamed chemicals.

1 have found that the photographs can be made more durable by the addition ot a caoutchouc, guita percha, or india-rubber solution, or the solution in bcnzolc, &C,, of other suitable bodies to the solution oi the colored resinate before the same is applied to the surface on which the photograph is to he produced. l have also found that the different-colored resinates (lii'ier in degree in their resistance to light, and therefore, if I use a resin-ate colored with a iuiXtu re of two or more colors of (liii'erent powers of resistance, the photograph obtained will show different colors and shades. l have also found that i can use in place of the salts of the acid or acids contained in resin -thatis to say, in place of the pure or si mple resi natcthe salt-sol. the chlorine, bromine,

oriodine substitution products of such acids, 1-

' intending hereby to claim the use, for instance,

of bibromo or bi io'do-abietic acid, instead of the pure acid of the resins.

Having thus fully described my invention,

v what I claimas new, and desire to secure by 'Letters Patent, fs-

'1. The new process of photography, which consists in coating a suitable surface upon which it is desired to produce a photograph with a solution of a resinate of a metal'or of an organic base, subjecting the prepared surface then to the action of light, as described,

- and then to the action of a suitable agent to obtain a negative or a positive of an object, as desired, substantially as set forth.

2. In the art of photography, the employment of a resinate as the essential sensitizing medium, substantially as and for the purpose set forth.

3. As a new article of manufacture, a resinate photograph, substantially as described.

In testimony whereof I- affix my signature in presence of three witnesses.

1 ARMAND MULLER-JACOBS.

\Vitnesses:

R. GrDYRENL-ORTH, JAS. M. LEHMAIER, LOUIS BROWN. 

